CN108548910B - Method for detecting water content of deep dewatered sludge - Google Patents
Method for detecting water content of deep dewatered sludge Download PDFInfo
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- CN108548910B CN108548910B CN201810335588.4A CN201810335588A CN108548910B CN 108548910 B CN108548910 B CN 108548910B CN 201810335588 A CN201810335588 A CN 201810335588A CN 108548910 B CN108548910 B CN 108548910B
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- 239000010802 sludge Substances 0.000 title claims abstract description 70
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 58
- 238000000034 method Methods 0.000 title claims abstract description 22
- 238000001514 detection method Methods 0.000 claims abstract description 34
- 239000000523 sample Substances 0.000 claims abstract description 28
- 239000002245 particle Substances 0.000 claims description 18
- 238000005259 measurement Methods 0.000 claims description 14
- 239000008187 granular material Substances 0.000 claims description 10
- 238000007664 blowing Methods 0.000 claims description 7
- 230000018044 dehydration Effects 0.000 claims description 5
- 238000006297 dehydration reaction Methods 0.000 claims description 5
- 238000010030 laminating Methods 0.000 claims description 3
- 238000005070 sampling Methods 0.000 claims description 2
- 210000003437 trachea Anatomy 0.000 description 4
- 239000002184 metal Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005370 electroosmosis Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Abstract
The invention discloses a method for detecting the water content of deep-dewatered sludge, based on a device for detecting the water content of deep-dewatered sludge, at least three electric sliding tables can realize the movement of a probe with three degrees of freedom in space, and can control the feeding amount of the probe in sludge cakes. The invention can accurately and efficiently measure the water content of the mud cake at different positions and thicknesses, and improves the detection reliability by improving the water content detection probe.
Description
Technical Field
The invention relates to the technical field of sludge water content detection, in particular to a method for detecting the water content of deep dewatered sludge.
Background
The detection of the water content of the sludge is an important index for judging and evaluating the dehydration effect of the sludge. The sludge mud cake after deep dehydration and squeezing is generally hard, and in the prior art, a small piece is generally taken from the sludge mud cake, and then the water content of the sludge is calculated through procedures of weight measurement, drying and the like.
The sludge water content detection method in the prior art has many defects, for example, a large amount of manpower is required to be consumed for operation; for the sludge with different thicknesses, the water content is different, the mode of the prior art is difficult to directly measure the water content of the sludge with different thicknesses, and the measurement can be completed only by manpower and matching with a measuring tool. However, the water contents of different positions and thicknesses of the sludge cake have important characterization and comparison functions for the research on the dehydration characteristics of the sludge, and how to accurately and efficiently complete the detection requirement is an important subject of the detection of the water content of the sludge.
Disclosure of Invention
In view of the above, the present invention provides a method for detecting water content of deeply dewatered sludge, which can accurately and efficiently measure water content at different positions and thicknesses of a mud cake, and is used to solve the technical problems in the prior art.
The invention provides a method for detecting the water content of deep dewatered sludge, which is based on a device for detecting the water content of deep dewatered sludge, wherein the device for detecting the water content of deep dewatered sludge comprises a water content detection probe and at least three electric sliding tables, the three electric sliding tables comprise a first electric sliding table, a second electric sliding table and a third electric sliding table, the first electric sliding table and the second electric sliding table are vertically arranged, the second electric sliding table is fixed on a sliding block of the first electric sliding table, the third electric sliding table is respectively vertical to the first electric sliding table and the second electric sliding table, and the third electric sliding table is fixed on a sliding block of the second electric sliding table; and the moisture content detection probe is connected to the sliding block of the third electric sliding table through a connecting piece.
Optionally, the first electric sliding table, the second electric sliding table and the third electric sliding table are equally divided and respectively comprise a motor, a screw rod and a sliding block, an output shaft of the motor is axially connected with the screw rod, the sliding block is arranged on a sliding rail of the corresponding electric sliding table, and the screw rod is spirally arranged in the sliding block in a penetrating manner.
Optionally, the moisture content detection probe comprises a conical shell and a first moisture sensor, a conical hole is formed in the conical shell, the first moisture sensor is arranged on the hole wall of the conical hole, a gas pipe connecting port is further arranged on the conical shell, and the gas pipe connecting port is communicated with the conical hole.
Optionally, the opening of the tapered hole is arranged at the tip end of the tapered shell, the opening serves as a sampling port for moisture content detection, an elastic strain sleeve is sleeved outside the tip end, and a pressure sensor is arranged in the elastic strain sleeve.
Optionally, a cylinder is connected to the bottom end of the conical shell, and the air pipe connector is arranged on the cylinder.
Optionally, the connecting piece is L type structure, one side of L type structure with the slider laminating of the electronic slip table of third is fixed, the another side of L type structure is equipped with the screw hole, be equipped with the external screw thread on the cylinder, the cylinder closes soon through the external screw thread on it in the screw hole.
Optionally, a tapered guide path is arranged in the column body, a small-diameter end of the tapered guide path is communicated with the tapered hole, and a large-diameter end of the tapered guide path is communicated with the air pipe connector.
Optionally, the water content detection device further comprises a blowing and sucking device, the blowing and sucking device is connected with the air pipe connector through an air pipe, and a second moisture sensor is arranged in the air pipe.
Optionally, a sludge particle containing cavity is arranged in the conical shell, the sludge particle containing cavity is connected with the large-diameter end of the conical hole, an air outlet hole is formed in the wall of the conical shell, the air outlet hole is communicated with the sludge particle containing cavity, and the outer end of the air outlet hole is connected with an air suction type device.
Optionally, the conical shell is connected with a conductive rod, and negative charges are introduced into the conductive rod during water content measurement, so that the conical shell is negatively charged; after the measurement is finished, positive charges are given to the conductive rod, water molecules are separated out by utilizing the repulsion principle, air is supplied to the air pipe, and water is discharged.
Compared with the prior art, the invention has the following advantages: at least three electronic slip table can realize the motion of three degree of freedom in the space of probe, and can control the amount of feeding of probe in mud cake, when contacting the mud cake soon, carry out the air-aspiration type action, metal toper shell inserts the mud cake, inhale a small amount of mud into, when the mud granule passes through moisture sensor, the record water content, measure a bit after, the electronic slip table of third rises, for the mud water content of convenient next measurement another bit, ventilate through the trachea, spit out existing mud granule, measure once more. The invention can accurately and efficiently measure the water content of the mud cake at different positions and thicknesses, and improves the detection reliability by improving the water content detection probe.
Drawings
FIG. 1 is a schematic structural diagram of a device for detecting the water content of deeply dewatered sludge;
FIG. 2 is a schematic structural view of an electric slide table;
FIG. 3 is a schematic structural view of a water content detecting probe.
The device comprises a motor 1, a motor 2, a screw rod 3, a sliding block 4, a conical shell 5, a conical guide path 6, a gas pipe connector 7, a first moisture sensor 8, a gas pipe 9, a second moisture sensor 10, a gas outlet hole 11, a sludge particle containing cavity 12, an elastic strain sleeve 13, a conductive rod 14, a cylinder 15, a connecting piece 16, a sludge cake 17 and a moisture content detection probe.
Detailed Description
Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, but the present invention is not limited to only these embodiments. The invention is intended to cover alternatives, modifications, equivalents and alternatives which may be included within the spirit and scope of the invention.
In the following description of the preferred embodiments of the present invention, specific details are set forth in order to provide a thorough understanding of the present invention, and it will be apparent to those skilled in the art that the present invention may be practiced without these specific details.
The invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. It should be noted that the drawings are in simplified form and are not to precise scale, which is only used for convenience and clarity to assist in describing the embodiments of the present invention.
Referring to fig. 1, a structure of a deep dewatered sludge water content detection apparatus is illustrated, where the apparatus includes a water content detection probe and at least three electric sliding tables, in this embodiment, three electric sliding tables are taken as an example, the three electric sliding tables include a first electric sliding table X, a second electric sliding table Y and a third electric sliding table Z, the first electric sliding table X and the second electric sliding table Y are vertically arranged, the second electric sliding table Y is fixed on a slider of the first electric sliding table X, the third electric sliding table Z is respectively perpendicular to the first electric sliding table X and the second electric sliding table Y, and the third electric sliding table Z is fixed on a slider of the second electric sliding table Y; and the moisture content detection probe 17 is connected to the sliding block of the third electric sliding table Z through a connecting piece 15.
The connecting piece 15 is L type structure, one side of L type structure with the slider 3 laminating of third electronic slip table Z is fixed, the another side of L type structure is equipped with the screw hole, be equipped with the external screw thread on the cylinder 14, the cylinder closes soon through the external screw thread on it in the screw hole.
Referring to fig. 2, a specific structure of the electric slide table is illustrated. The first electric sliding table X, the second electric sliding table Y and the third electric sliding table Z can adopt the structure, namely the first electric sliding table X, the second electric sliding table Y and the third electric sliding table Z respectively comprise a motor 1, a screw rod 2 and a sliding block 3, an output shaft of the motor 1 is axially connected with the screw rod 2, the sliding block 3 is arranged on a sliding rail of the corresponding electric sliding table, and the screw rod 2 is spirally arranged in the sliding block 3 in a penetrating manner. The three electric sliding tables respectively realize the motion of three spatial degrees of freedom, so that the probe can reach any point in space within a certain range.
Referring to fig. 3, a concrete structure of the moisture content detecting probe is illustrated, and the moisture content detecting probe is illustrated from a front view, a cross-sectional view, and an axial side. Moisture content test probe 17 includes toper shell 4 and first moisture sensor 7, the bell mouth has been seted up in the toper shell 4, first moisture sensor 7 set up in on the pore wall of bell mouth, still be equipped with trachea connector 6 on the toper shell 4, trachea connector 6 with the bell mouth is linked together.
The opening part setting of bell mouth is in the pointed end portion of toper shell 4, the sample connection that the moisture content detected is regarded as to the opening part, pointed end portion overcoat is equipped with elastic strain cover 12, be equipped with pressure sensor in the elastic strain cover 12.
A column 14 is connected to the bottom end (although the bottom end is geometrically defined, it is located at the upper portion of the tapered housing 4 in the drawing) of the tapered housing 4, and the air pipe connection port 6 is provided on the column 14.
The cylinder 14 is internally provided with a conical guide path 5, the small diameter end of the conical guide path 5 is communicated with the conical hole, and the large diameter end of the conical guide path is communicated with the air pipe connector 6. In addition, the object of the invention is further achieved. The water content detection device further comprises a blowing and sucking device, the blowing and sucking device is connected with the air pipe connecting port 6 through an air pipe 8, and a second water content sensor 9 is arranged in the air pipe 8. Although the drawing is not used to illustrate the blowing and sucking means, those skilled in the art can implement the present invention based on the teachings of the present invention.
Be equipped with the mud granule in the toper shell 4 and hold chamber 11, the mud granule hold chamber 11 with the major diameter end of bell mouth is connected, venthole 10 has been seted up on the 4 walls of toper shell, venthole 10 with the mud granule holds chamber 11 and is linked together, and the outer end of venthole 10 is connected air-suction type equipment.
The conical shell 4 is connected with a conductive rod 13, and negative charges are introduced into the conductive rod 13 during water content measurement, so that the conical shell 4 is negatively charged; after the measurement is completed, the conductive rod 13 is given positive charges, and water molecules are separated out, ventilated to the air pipe 8 and discharged by utilizing the repulsion principle.
The basic principle of the invention is as follows: at least three electronic slip table can realize the motion of three degree of freedom in the space of probe, and can control the amount of feeding of probe in mud cake, when contacting the mud cake soon, carry out the air-aspiration type action, metal toper shell inserts the mud cake, inhale a small amount of mud into, when the mud granule passes through moisture sensor, the record water content, measure a bit after, the electronic slip table of third rises, for the mud water content of convenient next measurement another bit, ventilate through the trachea, spit out existing mud granule, measure once more. If the sludge particles are large, the conical hole is designed, and when the sludge particles cannot be discharged, the conical shell is detached, and the particles are discharged. The conical casing is made of metal, for example steel, and has sufficient rigidity and strength to be inserted into the mud cake.
The invention comprises the following working stages:
a pre-measurement stage: when the moisture content detection probe 17 is about to contact the sludge layer, a control signal is given to the pressure sensor in the elastic strain sleeve at the front end, and when the pressure sensor is in contact with the sludge cake in advance, the pressure of the contact sludge is measured. If the pressure of the sludge blanket is too great or the sludge is hardened too much, damage to the conical shell 4 may occur. At this time, the feedback signal is changed into a coordinate to be measured. If the Z-axis is within the tolerance range, the Z-axis is lowered, and the formal detection is carried out.
And (3) formal detection stage: after the conical housing 4 has been inserted into the sludge blanket, 8 air tubes draw air, drawing a small amount of sludge particles into the probe, past the first moisture detecting sensor 7. The first moisture detecting sensors 7 are arrayed in the inner tapered hole. And (5) data acquisition is carried out. In order to prevent the sucked sludge particles from being too small and too fast to be sucked, the sludge particles enter the air pump through the conical guide passage 5, the second moisture detection sensor 9 in the air pipe 8 is specially designed to detect the moisture again, and if no new data is generated in the second moisture detection sensor 9, the normal state is indicated. If there is new data in the second moisture detecting sensor 9, this indicates an inaccurate measurement and an adjustment is required to reduce the air suction.
Because the sludge particle containing cavity 11 is arranged, the containing function of the sludge particle containing cavity is increased for the purpose of fast and multi-point measurement, but the air outlet 10 is specially designed for preventing larger sludge particles from blocking or containing more sludge, the air outlet is connected with external air suction equipment, when the data of the sludge particle containing cavity cannot capture new data, the sludge particle is extracted, and the sludge particle which is sucked out.
When measuring the sludge after electroosmosis treatment, water molecules in the sludge are positively charged, so the conductive rod 13 is designed, and when the moisture content detection probe 17 sucks a small amount of sludge, negative charges are given to the conductive rod 13 to enable the conical shell to be negatively charged. At this time, water molecules in the sludge are more likely to enter the sensor 7 due to the attraction of positive and negative charges. The measured data is more accurate. After the measurement is finished, positive charges are given to the conductive rod 13, water molecules in the sensor are separated out by using a repulsion principle, then the air pipe 8 is ventilated, and water is discharged.
When all the sludge is completely discharged, 8 air pipes are used for discharging the sludge. When there is a large sludge on the wall, which is difficult to remove, the conical housing 4 is separated from the column 14, which can be cleaned because the column 14 is provided with the conical guide 5.
Although the embodiments have been described and illustrated separately, it will be apparent to those skilled in the art that some common techniques may be substituted and integrated between the embodiments, and reference may be made to one of the embodiments not explicitly described, or to another embodiment described.
The above-described embodiments do not limit the scope of the present invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the above-described embodiments should be included in the protection scope of the technical solution.
Claims (8)
1. The deep dehydration sludge water content detection method is based on a deep dehydration sludge water content detection device and is characterized in that: the device for detecting the water content of the deeply dewatered sludge comprises a water content detection probe (17) and at least three electric sliding tables, wherein the three electric sliding tables comprise a first electric sliding table X, a second electric sliding table Y and a third electric sliding table Z, the first electric sliding table X and the second electric sliding table Y are vertically arranged, the second electric sliding table Y is fixed on a sliding block of the first electric sliding table X, the third electric sliding table Z is respectively vertical to the first electric sliding table X and the second electric sliding table Y, and the third electric sliding table Z is fixed on a sliding block of the second electric sliding table Y; the moisture content detection probe (17) is connected to a sliding block of the third electric sliding table Z through a connecting piece (15);
the first electric sliding table X, the second electric sliding table Y and the third electric sliding table Z respectively comprise a motor (1), a screw rod (2) and a sliding block (3), an output shaft of the motor (1) is axially connected with the screw rod (2), the sliding block (3) is arranged on a sliding rail of the corresponding electric sliding table, and the screw rod (2) is spirally arranged in the sliding block (3);
the moisture content detection probe (17) comprises a conical shell (4) and a first moisture sensor (7), a conical hole is formed in the conical shell (4), the first moisture sensor (7) is arranged on the hole wall of the conical hole, an air pipe connecting port (6) is further arranged on the conical shell (4), and the air pipe connecting port (6) is communicated with the conical hole; the conical shell (4) is inserted into a sludge layer, the air pipe (8) sucks air, a small amount of sludge particles are sucked into the probe, and the sludge particles pass through the first moisture detection sensor (7) and are subjected to data acquisition by the first moisture detection sensor (7).
2. The method for detecting the water content of the deeply dewatered sludge according to claim 1, wherein the method comprises the following steps: the opening of the conical hole is arranged at the tip part of the conical shell (4), the opening is used as a sampling port for detecting the moisture content, an elastic strain sleeve (12) is sleeved outside the tip part, and a pressure sensor is arranged in the elastic strain sleeve (12); setting a pre-measurement stage: when the moisture content detection probe (17) is about to contact the sludge layer, a control signal is given to the pressure sensor in the elastic strain sleeve at the front end, and when the pressure sensor is in contact with sludge cakes in advance, the pressure of contacting the sludge is measured.
3. The method for detecting the water content of the deeply dewatered sludge according to claim 1, wherein the method comprises the following steps: the bottom surface end of the conical shell (4) is connected with a column body (14), and the air pipe connecting port (6) is arranged on the column body (14).
4. The method for detecting the water content of deep dewatered sludge according to claim 3, wherein the method comprises the following steps: connecting piece (15) are L type structure, one side of L type structure with the slider laminating of the electronic slip table Z of third is fixed, the another side of L type structure is equipped with the screw hole, be equipped with the external screw thread on cylinder (14), cylinder (14) are fitted soon through the external screw thread on it in the screw hole.
5. The method for detecting the water content of deep dewatered sludge according to claim 3, wherein the method comprises the following steps: the cylinder (14) is internally provided with a conical guide path (5), the small diameter end of the conical guide path (5) is communicated with the conical hole, and the large diameter end of the conical guide path is communicated with the air pipe connector (6).
6. The method for detecting the water content of deep dewatered sludge according to claim 5, wherein the method comprises the following steps: the water content detection device further comprises a blowing and sucking device, the blowing and sucking device is connected with the air pipe connecting port (6) through an air pipe (8), and a second moisture sensor (9) is arranged in the air pipe (8).
7. The method for detecting the water content of deep dewatered sludge according to claim 5, wherein the method comprises the following steps: be equipped with the mud granule in toper shell (4) and hold chamber (11), the mud granule hold chamber (11) with the big footpath end of bell mouth is connected, venthole (10) have been seted up on toper shell (4) wall, venthole (10) with the mud granule holds chamber (11) and is linked together, and the outer end of venthole (10) is connected air-suction type equipment.
8. The method for detecting the water content of deep dewatered sludge according to claim 6, wherein the method comprises the following steps: the conical shell (4) is connected with a conductive rod (13), and negative charges are introduced into the conductive rod (13) when the water content is measured, so that the conical shell (4) is charged with negative charges; after the measurement is finished, positive charges are given to the conductive rod (13), water molecules are separated out by utilizing the repulsion principle, air is supplied to the air pipe (8), and water is discharged.
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| CN201810335588.4A CN108548910B (en) | 2018-04-16 | 2018-04-16 | Method for detecting water content of deep dewatered sludge |
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| CN201810335588.4A CN108548910B (en) | 2018-04-16 | 2018-04-16 | Method for detecting water content of deep dewatered sludge |
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| CN116559683A (en) * | 2023-04-21 | 2023-08-08 | 辽宁充宝汽车新能源科技有限公司 | Method and device for monitoring schedulable charging capacity of mobile energy storage station |
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Granted publication date: 20200623 |